Transporting-bar for pipes.



WINFIELD STEINER SIG-LEE, OF MEXICO, MEXICO.

TRANSPORTING-BAR FOR PIPES.

Specification of Letters Patent.

Patented Oct. 26, 1909.

Application filed November 2, 1908. Serial No. 460,768.

To all whom it may concern:

Be it known that I, WINFIELD STEINER SIGLER, a citizen of the UnitedStates of America residing at Avenida 15,San Pedro, Mexico F Mexico,have invented certain new and useful Improvements in Transporting-Barsfor Pipes, of which the following is a specification.

In moving from one place to another heavy sections of large diameterpipes such as sewer pipes it is customary to pass through them in adirection parallel with the axis, long transporting bars, customarily ofuniform section, having their ends projecting sufliciently beyond theends of the pipe section to enable one or more men to shoulder said endsaccording to the weight of the pipe. As such pipes frequently run up tovery large diameters, inches and more being not uncommon, thetransporting bar must necessarily be of very much smaller diameter andnot entirelyfilling the tube is bound to bear unequally against theforward or rear edge of the upper supporting surface resting upon thebar, in case there is the slightest inequality in lifting efiort betweenthe two ends. Especially is this the case when the weight of the pipe isfirst taken off the ground by such means, as the lifting party at oneend is very apt to lift before or after that at the other. As soon asthe bar is thus canted out of parallelism with the pipes axis the entireweight will come upon the inner upper corner of that end of the pipe atwhich the lifting effort is stronger or sooner. \Vhile such pipes areabundantly strong enough to resist uniform internal fluid pressure oruniform external crushing stress as of the earth with which they arecovered they cannot from the nature of their material-concrete, cement,glazed clay, plain earthenware, asphaltum, bitumen etc. resist powerfulstresses concentrated at one point tending to local deformation orrupture. More particularly is this the case at the pipe ends where theexposed corners have no support whatever on one side. Hence in movingpipes using the present transporting bar there result very manyfractured edges, frequently entailing total loss of the injured section.In my experience I have found the percentage of such fractures to runvery high. The loss is very much increased where, as is sometimes thecase, the thickness of the pipe walls is reduced for a short distanceback from each end to provide for especial means of connecting sections.

My invention aims to reduce the percentage of such loss if not entirelyto wipe it out, by so proportioning the improved transporting bar thatshould it be canted out of parallelism with the pipes axis the weight ofthe pipe will bear upon the bar not at the edge, but well inside theedge where the pipe walls mutually support their constituent parts inall directions. This object I attain by the construction illustrated inthe accompanying drawing in which Figure 1 is a perspective view of theimproved transporting bar and Fig. 2 is a perspective view of amodification thereof.

The bar is circular in section throughout its length, it has an actualweight-carrying or bearing portion of a uniform diameter throughout itslength, which length is proportioned to fall short of the length of thepipe section to be carried so that when the offsets or shoulders 3ateach end of the bearing portion are brought to an equal distance fromeach end of the pipe section by suitably moving the bar along the insideof the pipe, the said offsets will be well within the pipe at a distancefrom its end proportioned to the weight and thickness thereof. Thetransporting bar-handles 2 extend at an equal distance from theshoulders 3 which are formed by reducing the ends of the bar point fromthat of portion 1 to the initial diameter of portion 2.

In Fig. 1 I have shown this reduction of diameter as abrupt, forming a0g or shoulder having a flat face 4 and a sharp corner 5, but I maywithout prejudice to my invention use a more gradual reduction ofdiameter as shown in Fig. 2 giving the shoulder 3 a smooth transition 4?between the diameters-of portions 1 and 2 and a curved bearing portion 5corresponding to the shoulder?) of Fig. 1 upon which will come theweight of the pipe in case the transporting bar is lifted unequally. Thehandles are e and of a length proportioned to the number of men neededon each end to carry the pipe section to which the bar correspond. Forin this practice difierent sizes of bars must be provided for sectionsdiffering materially in length or weight, although one size of bar willanswer for a fairly large range of pipe diameters provided that thesection length remain the" same.

The bar is preferably made of wood but may be of iron or steel suitablydisposed.

ends of the pipe will project beyond the ends of said body to overliethe handles and be spaced therefrom so that the extreme ends of the pipewill be out of contact with the bar body and the handles to preventrupture of the pipe ends by cont-act with the carry ing' medium.

In testimony whereof I afliX my signature in presence of two witnesses.

l/VINFIELD .STEINER SIGLER.

Witnesses:

J. GRANDJEAN; Josii MATA.

